do not trust regexp, if possible

Author: dominictarr

lib/utils.js

@@ -43,9 +43,8 @@ var env = exports.env = function (prefix, env) {
   env = env || process.env
   var obj = {}
   var l = prefix.length
-  var regex = new RegExp("^"+prefix, "i");
   for(var k in env) {
-    if(regex.test(k)) {
+    if(k.toLowerCase().indexOf(prefix) === 0) {
 
       var keypath = k.substring(l).split('__')
 
@@ -102,3 +101,4 @@ var find = exports.find = function () {
   return find(process.cwd(), rel)
 }
 
+